Dilations

Dilations

Assessment

Flashcard

Mathematics

8th - 10th Grade

Hard

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15 questions

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1.

FLASHCARD QUESTION

Front

What is a dilation in geometry?

Back

A dilation is a transformation that alters the size of a figure but not its shape, using a center point and a scale factor.

2.

FLASHCARD QUESTION

Front

What is the scale factor in a dilation?

Back

The scale factor is the ratio of a length of the new figure to the corresponding length on the original figure.

3.

FLASHCARD QUESTION

Front

If a point (x, y) is dilated by a scale factor k, what is the new coordinate?

Back

The new coordinate is (kx, ky).

4.

FLASHCARD QUESTION

Front

What happens to a figure when the scale factor is greater than 1?

Back

The figure undergoes an enlargement.

5.

FLASHCARD QUESTION

Front

What happens to a figure when the scale factor is between 0 and 1?

Back

The figure undergoes a reduction.

6.

FLASHCARD QUESTION

Front

State the coordinate of the image of the point B (-10,-6) under a dilation with center at the origin and scale factor k = 1/2.

Back

(-5,-3)

7.

FLASHCARD QUESTION

Front

What is the scale factor if the point (8, 12) is dilated to (2, 3)?

Back

1/4

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